One curie equals how many decays per second?

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Study for the Health Physics (PMT 102A) Test. Access multiple-choice questions, explanatory hints, and detailed answers. Enhance your preparation confidently and get ready for the exam!

Multiple Choice

One curie equals how many decays per second?

Explanation:
Understanding activity means counting how many decays happen each second. The curie is a historical unit of activity defined as 3.7 × 10^10 disintegrations per second. So one curie corresponds to 3.7 × 10^10 decays each second (equal to 37 billion decays per second, or about 37 gigabecquerels in SI terms). The other options are far too small to represent a curie, since a curie is a large unit used for activities that are many orders of magnitude greater than a single decay per second.

Understanding activity means counting how many decays happen each second. The curie is a historical unit of activity defined as 3.7 × 10^10 disintegrations per second. So one curie corresponds to 3.7 × 10^10 decays each second (equal to 37 billion decays per second, or about 37 gigabecquerels in SI terms). The other options are far too small to represent a curie, since a curie is a large unit used for activities that are many orders of magnitude greater than a single decay per second.

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